Excavating device.



W 0. WEEKS. BXGAVATIHG DEVICE.

- Arrmou mn FILED SBPIHM; 190a 921,928. Patented May 13, 1909.

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WWW)? V f I 210?" \@;W- Q Vii 5L WILLIAM C. WEEKS, OF SEATTLE,WASHINGTON.

EXCAVATING DEVICE.

' w: Specification of Letters Patent.

Patented M s, 1909.

Application filed-September 22, 1908. Serial No. 454,269. q ywg,

To all whom it 'nw/y concern:

Be -it known that LW'ILLIAM'C. Winnie, a citizen of the United States,and a resident of the city of Seattle, in the county of King and Stateof \Vashington, have invented certain new and useful Inmrovements inExcuvatin Devices, of which the following is a speci cation.

My invention relates to an improvement in a type of excavating bucketdesigned to be operated by of main haulage rope and a backhaul or tailrope for the purpose of moving material over specific routes. r Myinvention comprises means whereb throug'hthe medium of a haul-back ortail rope, the bucket may be made to assume and.

maintain the digging or loading position when desired.

The invention consists of the novel means whereby this result is.secured and whereby the bucket as a whole and the mechanism for itsoperation are improved.

hue et in loading position. Fig. 3, is a side elevation of the bucket inthe back-haul position. Fi 4, is a side elevation of the bucket .inloaded position, showing also the rope system for operating the same. Fi5, is a plan View showing a chain bail an; connection with the yoke.Fig. 6, shows adjustable sto s for the yoke.

hisbucket is of that class which is especially adapted for operation bymeans of a draft rope' and a haul-back or tail rope.

- rope 3, is attached to the 45 5 The body 1, of the bucket comprises abottom,two sides and a back,and for some situations and conditions has apartial cover 10. Teeth 2, placed upon front or cutting edge, assistmaterially in di ging. The draft lhucket by means of ail 4, which ispivotally or h1ngedly secured to the sides of the bucket at T0. This maybe of iron bars as shown in Figs. 1 to 4, or of flexible chain as shownin Fig. 5.

Hinged tothe bucket, conveniently at the points where the bail isconnected, is a yoke ,5, which extends above the bucket. This yoke maybe made integral with the draft ail 4, as shown in Fi 2, or be aseparate member as shown in Fig. 4. It is connected with the bail insuch a way as to limit the separation of these parts. This connectionmay be a rigid bar or liars- 1, as showir'in Figs. 1, 2 and 3, or beaziflexibleiconnection as the chain 42, of Figs. eandzo. Wlreii the ri'id bar is used the bail and yoke'are'fin e ect a single memberhavingits'parts ma intained in fixed relation NV-It'll each-dtherw\Vhere the connection is flexible as shown in Figs. 4 and 5, thebail'and yoke nmy' approach each other: but cannotseparate' beyond afixed amount.

I prefer to limit the swing of the yoke f5,

relative to the bucket, as V V projections from the side of the bucket.hese may be made in any suitable way", as by 'securlin'gia .bar to thesides, of the bucketas' 'ii Fig. -5,

having its end turned outward." By'usifig two bars, as in Fig. 6, ameasure'of adjustability may be obtained by shifting one'or both upontlieir securing bolts. I provide means whereby the hau l back or ta lrcape 7, may be usedto positively tilt and hol the bucket in the'pao'sitio'inas shown in Fig. 2. This isdoiie watchers ing the rear partofthe bucketi with the bail so as to draw them togethertorintotheposition shown in Fig. AsrhereiMshown the end of the haul back orta il ibpe sissecured at 30,to the yoke thence passia about a pulley11', mounted at the rear en' ofi t he bucket, thence about a pulley:iiynpon tli'e yoke and thence between 13 at the rear of the bucliet. ifhis gives the tail rope a triple urchase oi*'-1iufll'upon'the yoke sothat a slig t pull upon the tail-rope will be sufficient to hold thebucket "in the digging or loading position. These pullcys'con- 1 stituteguides for the tail rope: wihny "suitable form of guides inay'be used.The method of connecting the yoke with the bucket by the tail rope,need" iiot beexclusively thatshown; a greateror lessernuns ber ofpulleys and runs 'of ropeimayggbe ein ployed as a greater orlessenimultiplication of the power is desired. I i 1-"- ..;.nl1

Connected with the tail rope and the rear of the bucket or scraper, is achain 8, which is of such length that when the yoke has been drawn backby pull upon the tail ro e, and the bucket is being drawn backward y orto the position shown in Fig. 3, the chief strain comes upon the chain8, This prevents cxcessive strain u on the yoke in such cases as whenthe hue 'et catches upon an obstruction during its return trip. Thisbucket would in many cases be used as a self dumping bucket. For thispurpose I runs from its drum B to'the distant or tail v rear end of theinto substantially the bury itself in the material.

toward a horizontal stops limiting the swing provide side projectin rearof, the bucket. engage side rails or where thebucket is to t Ia'common-method of dumping such buckets and is therefore not furtherillustrated. The draft or main haulage from'its drum A either directlyto the draft bail 4, or' first over guide pulleysif this be necessary.The haul-back or tail rope 7,

guides at the galley D and thence to. the

what, guide ulley C being used ifnecessarly. In haulingthe bucketoutward oy the tai ropejit assumes a -position substantially like thatof F i 3, the main or draft rope 3 being slack. Vhen the dig ing orloading point Is reached strain is "pfi ced upon the draft rope and mostof the strain removed from the tail rope. This tips the bucket 2 inwhich the tendency is for the bucket to When it has been sufiicientlyfilled strain is removed from the tail rope, Whereu'ponthe bucketsettles rises and ridesiupon t terial.

What I claim is: i

1. An excavating device comprisin a bucket, a draft bail and a yokeconnects together and pivoted to the bucket, and rope guides carried by.said yoke and the rear end of the bucket.

2. An excavatin scraper bucket, .a nected together and e surface of t ema device comprising a raft bail and yoke c0npivoted to the bucket, ofthe yoke upon its pivots and rope guidescarrid by the yoke and by therear end of the buckets.

'- 3. An excavatinv scraper bucket, a d l-aft .bail' secured to thefront lower art of the bucket,.a draft rope secured to t bucketandtconnected with the bail to limit their angular separation, a tailrope and guides for the tail ropecarriedby the yoke and bygthe rear endof 'thebucket.

4. An; excavating and transporting device comprising a bucket or scoop,a: draft bail and up-standing yoke connected together and Eivoteduponthe bucket, a draft rope attac lugs 21, toward thehese are designed to.oint, dumped. Tiis is rope, 3, leads' position shown in Fig.

V controlled by avtail ro e. sition' and uickly' comprising a bucket, adraft bail, an

back rope ro-ve about said rollers device comprlslng a,

e bail, a yoke-pivoted to the ed to the draft bail a haul-back rope,

a tailpulley for the hauhbabk rope,' and means whereby the yoke of thebucket may be drawn together y a strain upon the haul-back r0 e.

5. An excavating bucket swing a draft and the rear, art 5g bail, a yokepivotedtothe bucket and havmga limiting connection with the bail,

n eans connecting thetail rope direct withz-the bucket, and rope guidescarried by the yoke and the rearend of the bucket and adapted 'toreceive the taiLr'o' e. a

6. An excavating ucket having a draft bail and yoke pivoted to thebucket and hav ng a-l1miting connection with each other,-

means for connecting-a tailfropeldirectly with the rear end of is controled by the 7. AneXcavatin-g buckeUh'aving adraft bail and af-yokepivoted tothe bucketand having? a limiting connection with each other,

drafton the tail, rope.

and- Ineans .whereby. the relative angular 15osition of the yoke and the'buc'ketfmay be device y e pivoted to the bucket and'havmg a limitingconnection with the draft bail, a tail roge 8.'An excavating antransportin tail rope guides carried by the yoke and the rear. end ofthe bucket, and'an independ ent draft connection of the tail ro on withthe bucket brought into-action w en the yoke is drawn back by} the tailrope.

v 9. An excavating device comprisin a. bucket or scoo a draft bailand'upstan yoke connecte to ether and pivoted to the ucket', guide rol erscarried the yoke uc e t, a haulto draw the yoke and rear "part of therbuckettoether,a .draft rope connected with the-draft and by the rearpa'rtoffthe b bail, a power operated rum for each co'f said ropes, andatail pulley forthe haulback rope.

In tes'timonywhereof I havehereimto aifixed my signature at' Seattle,"lvashington, this 15t day of September,-1908., v v I W: G. WEEKS;

Witnesses:

JAMEB' G. Comes,

T. MGCRORY.

the bucket, and means: whereby the relative. angular osition's' of theyoke-and bucket

